By default splits the \(p\)-values at 0.5 with those below
counting as positive and those above counting as
negative.
However setting alpha
allows for a different choice of cut-off
and also by specifying two different values
for a neutral zone.
If either value of alpha is greater than unity
it is assumed to be a percentage.
The values of \(p_i\) should be such that \(0<p_i<1\) and a warning is given if that is not true. An error is given if, possibly as a result of removing illegal values, fewer than two values remain.
The plot method for class ‘metap
’ calls plotp
on the valid \(p\)-values.